Lua table.filter (JavaScript Array::filter equivalent)

table.filter.lua

-- table.filter({"a", "b", "c", "d"}, function(o, k, i) return o >= "c" end)  --> {"c","d"}
--
-- @FGRibreau - Francois-Guillaume Ribreau
-- @Redsmin - A full-feature client for Redis http://redsmin.com
table.filter = function(t, filterIter)
  local out = {}

  for k, v in pairs(t) do
    if filterIter(v, k, t) then out[k] = v end
  end

  return out
end